Sentences with phrase «male gametes»

By transmitting the genetic information to the next generation and marking the beginning of a new life, the encounter between female and male gametes at fertilisation is one of the most fundamental processes in biology.

For example, a few mutations in a critical binding pocket within the gamete receptors (the proteins that allow a male gamete to adhere to a female gamete) of various invertebrate marine organisms (these organisms simply discharge their gametes into the water in a blind shotgun mating strategy) can produce a reproductive isolation event between subpopulations.

spermatozoa), and more commonly known as a sperm cell, is the haploid cell that is the male gamete.

Sexual reproduction in flowering plants occurs by fertilization of the female gamete (a reproductive cell) by a male gamete.

Not exact matches

The first page of Larsen's Human Embryology states that, `... [W] e begin our description of the developing human with the formation and differentiation of the male and female sex cells or gametes [sperm and egg], which will unite at fertilisation to initiate the embryonic development of a new individual».

To reproduce, C. elegans must produce gametes, that is male sperm and female eggs.

Fisher found that sperm from the promiscuous species often recognized and latched on to other gametes from the same male, upping the odds of passing on that mouse's genes.

By that time, the sex - inducing gene was active and the volvox began making male and female gametes instead of asexual ones, the group reports online 9 June in the Proceedings of the Royal Society, London, B.

It describes how a population evolves from different mating types producing same - sized sex cells (or gametes) to mating types producing different - sized gametes, such as where there are distinct males and females.

Why would a situation evolve where some individuals produce small gametes that are motile or capable of motion (the males) and others produce large, non-motile gametes (the females)?»

He derived a prediction from an existing mathematical model of the Disruptive Selection Theory that states that for the evolution of males and females to remain stable, the ratio of the size of the larger gamete to the smaller gamete has to be greater than three.

Both male and female F1 offspring exhibited insulin resistance and higher glucose, inherited predominantly through maternal gametes (147).

gamete: Haploid reproductive cells that combine at fertilization to form the zygote, called sperm (or pollen) in males and eggs in females.

Interactions between the two sexes and between competing males commonly occur after the pageantry of courtship and mating subsides, and the battles reach all the way down to the level of genitalia and gametes.

Furthermore, the requirement of mouse Boule for male reproduction and its dispensability for female fertility suggests that low level expression of Boule in embryonic germ cells and adult ovaries is not essential for either the development of germ cells or the production of female gametes.

Sex - specific traits that lead to the production of dimorphic gametes, sperm in males and eggs in females, are fundamental for sexual reproduction and accordingly widespread among animals.

My favorite is sperm competition theory, which basically states human mate competition is not performed at the organism level (human males fighting with other human males for a human female) but actually at the gamete level (sperm fighting with other sperm for an egg).